Pierre Le Roy et la chronométrie / 
Paul Ditisheim, Roger Lallier, L. Reverchon, le commandant Vivielle ; préface de l'amiral Lacaze. 
 - Facsimile edition. 
 - 146 pages, 32 pages of plates :  illustrations (including facsimiles, diagrams) ;  28 cm 
<br/><br/>Includes index. 
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<br/><br/><label>Subjects--Personal Names: </label><br/>Le Roy, Pierre, 1717-1785. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Horology--History.<br/>Astronomical clocks.<br/>Chronometers.
<br/><br/><label>Subjects--Index Terms: </label>clock marine chronometer LeRoy Le Roy Marine Chronometer France History